Boiler for locomotives.



S. M. VAUGLAIN.

BOILER FOR LGOMOTIV'ES. Y APILIATION FILED JAN. 21, 1909. Patented July 6, 1909.

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S. M. VAUCLAIN.

BOILER FOR LOCMOTIVES.

APPLIGATION FILED sum1, 190e.

Patented July 6,1909.

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SAMUEL M. VAUCLAIN, PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO BURNHAM,

WILLIAMS d. COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A FIRM.

Bouma ron Looouorrvns.

specification of Letten. Patent.

Patented July e, 1909.

Applicaton'led January 21, 1909. Serial No. 473,402.

To all whom 'it may concern:

Be it known that I, SAMUEL M. VAUCLAIN, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain. improvements in Boilers for Locomotives, of which theI following is a specitication.

My invention relates to that type of a lo comotive known as an articulated locomo tive; a". e. one in which two frames each carrying independent sets of Adriving mechanare coupled together by a pivot, so that while the locomotive has a long wheel base.

it will readily take the curves of the track.

' In. this type of locomotive'the boiler is firmly attached to one :trame and overhangs the other ironie; 1t being carried on the `frame which it overhangs by suitable supports@ The boilers oi" these locomotives have been made as w.siingle boiler so that in the event of one iframe being detached from the other the overhanging portion of the boiler had to be :inked up or otherwise Supported.

@ne object of my invention is to make the boiler in two sections; one section being carried by one frame and the other section being carried by the other frame; the two sections of the boiler being bolted together when the locomotive is in use so that in operation it will be, in fact, one boiler, the overhanging 'portion adapted to move over the frame by which it is carried. By this 4construction I can uncouple the two sections of the boiler and detach one frame from the other so as to move the ramevapart andalsol selfiarate'the boiler sections so that access may be had to the interior of the boiler to remove the tubes or to otherwise repair the'v interior parts oi the boiler.

A further object of this invention is to provide the boiler with Vtwo sets of comparatively short tubes instead of the long single set now in use. i

In the accompanying drawing z-Figure l, is a side view of an articulated locomotive,

showing my improved construction of boiler;

Fig. 2, is a view similar to Fig. 1, showing the yparts of the boiler separated; Fig. 3, is an enlarged, sectional, perspective view through thel joint of the boiler; ,F ig. 1, is a view similar to Fig. 3, showing the parts separated; Fig. 5, is an edge View of one of the parts; and Fig. 6, is a view of a modificatlon.

A is the rear frame of an articulated locomotive. B is the forward frame; the two frames being pivoted together by pivot ins c in the manner' common to this type o locolnotive. The frame A is mounted on the driving wheelsb and cylinders A are situated at the forward end of the frame. The usual intervening mechanism is rovided for driving said wheels. The rame B is mounted on driving wheels l) and carries the low pressure cylinder B and is also provided wlth intervening mechanism for driving the wheels.

D is the boiler made Vin two sections D and D2. This boiler is rigidlymounted on the frame A and overhangs the forward frame B. The overhanging portion of the boiler is supported on suitable standards C carried by the frame B; the boiler in the present instance having saddles C', which rest upon these supports. By this construction the frames are free to take the curves of the track; the boiler being rigidly mounted on the rear frame, its forward end will move laterally over the frame B.

The ordinary practice is to make the boiler as a single structure; the tubes being of considerable length and diiiicult to replace when necessary. Attempts havebeen rially decreases the tube space of the boiler. v

By my invention I make the boiler in two independent sections, and in the present instance providev each section with a flange, and when the two frames A and B are coupled together the two langes are brought in 4contact and bolts or other fastenings may y be provided -for firmly securing the langes together so as to make the holler, 1n fact,

a sin le structure and'I provide the section D" with` a. tube sheet d and extend tubes e may be made in any from the tire boxD to the said tube sheet rl, and l provide the section D2 with a tube sheet (Z2 and extend the tube c to the tube sheet oi' the sinolte box D". The two tube sheets d and Z2 may be arranged any distance from the flanged ends of the boilei` sections D', D', as desired, according to the space necessary, and the tubes e, c', may be of diii'ei'ent diameters, it' desired.

It' the space D between the tube sheets d and d, which is, in fact, a secondary coinbustion chamber, is adapted to receive a superheater or feed water heater, then the two tube sheets d', cl2 are set baclt to such an extent as to leave space to receive the superheating or other structure. But, it the space is not to be occupied by any other structure, then the tube sheets d, d2 may be placed close together, if desired.

While the joint between the two sections manner desired, prefer to use the. joint illustrated in Figs. 3 and Ll, in which CZ is the 'flange on the section D and da is the flange on the section D2. (lne liange has a beveled projection adapted to a beveled recess in the other flange and bolts i extend through both tlanges and couple them together, the V-shaped abutting faces making comparatively tight joints and properly alining the two sections of the boiler. lThe flanges may be secured to the sections by rivets, as shown, or by any other tastenings, if desired.

In Fig. 6, I have shown a dange on 4each section consisting ot an angle .plate with transverse bolts passing through the projecting flanges of the plat-es.v

By the above description it will be seen that the boiler has two independent steam spaces. These steam spaces may be connected as shown or may be made entirely independent; one steam space being connecte to one set of cylinders and the other steam space being connected to the other set of cylinders. i

lf the engine is`to be used as a compound engine, then steam may enter first the cylinders on one frame and be carried to the cylinders on the other frame by suitable flexible connections, as shown, or may pass, after leaving one set ofcylinders, to the tubes of a superheater before entering the second set of cylinders, and this superheater may be located in the space D5 or in the 'smalre box D", as desired, depending upon the type of engine to which my invention is applied.

I claim:

1. The combination in an articulated locomotive, of two frames pivoted together, a boiler mounted rigidly on one frame and overhanging the other frame, said boiler being made in two sections, one section detachably connected to the other.

2. `The combination in an articulated leed motive, of two frames pivoted together, a boiler inountediigidly on one frame an overhanging the other frame, said boiler being made in twosections, the over-hanging section being detachably secured to the fixed section, and means for supporting the overhanging section upon that frame over which it extends.

3. The combination in yan articulated locomotive, of two frames pivoted together, a boiler rigidly mounted on one :trame and overhanging the other trarne, said boilerfbering made in two sections, each detachably secured together, means for supporting the overhanging detachable section 0i the boiler when the two sections of the boiler are detached, said means acting to properly support the overhanging section when connected tothe rigid section and to allow' it to move laterally in respect to the frame over which it extends.

l. The combination in anarticulated locomotive, of twov frames pivoted together, a boiler rigidly mounted on one frame and extending over the other raine, said boiler being made in two independent sections, means for securing the sections together, each section having independent tubes and tube sheets.

5. The combination in an articulated locomotive, of two frames pivoted together, a boiler rigidly mounted on one frame and eX- tending overthe other frame, supports car-l rying the overhanging portion, said overhanging portion being made separable from the lined portion of the boiler, tube sheets at the abutting ends of each section forming a space or secondary combustion chamber, and tubes attached to the tube sheets.

6. The combination in an articulated locomotive, of two frames pivoted together, a boiler rigidly mounted on one frame and eX- tending over the other frame, said boiler being made in two sections, means for coupling the two sections together, and tube sheets at the abutting ends ot the said sections, said tube sheets being mounted within each section some distance from the abutting ends so as to provide a secondary combustion chamber or a space for the location of a superheater or other apparatus.

7. VThe combination in an articulated locomotive, of two frames pivoted together, a boiler mounted rigidly on one frame and overhanging the other traine, said boiler being made in two sections, a flange on each section, means for securing the two sections together so as to rigidly connect the two sections, independent tubes in each section, and means for supporting tion of the boiler on it extends.

8. ylflie combination 'in a boiler having a. lire bon at one end, a smolre box at the other the frame over whic iis the overhanging porend, and an intermediate combstion cham In testimony whereof, I have signed my ber, tubes connecting the combustion chamname to this specification, in the presence of ber with the fire box and the smoke" boX,. two subscribing Witnesses.` said 'boiler-being made iii-two sections, the SAMUEL M. VUCLAIN.

,5 parting being at the combustion chamber, XVitnesses:

and mea-ns coupling the fzwo sections rigidly J As. H. M. HAYES, together. J. H. KERST. 

